BROKEN LG INTELOWASH 7KG WM1171FHB?

Wash cycle starts to run to point where couple of inches of water enter drum, then machine makes pretty noise and stops but code SE flashes on consol. LG tell me this code means the sensor needs re-setting (note, not broken). A local company tell me this is wrong and it's a worse problem! Either way LG want £140 to fix and warranty 12 months, locals say will be over £150!?*&# Please help, i'm sick of taking washing to my mums as this happened 2 months ago and I can't afford this money or a new machine.